Pet drinking fountain



FIG. 1 is a front, right, and top perspective view of a pet drinking fountain, showing my design.

FIG. 2 is a rear, left, and bottom perspective view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a rear elevation view thereof.

FIG. 5 is a left side elevation view thereof.

FIG. 6 is a right side elevation view thereof.

FIG. 7 is a top plan view thereof.

FIG. 8 is a bottom plan view thereof.

FIG. 9 is an enlarged detail view of area 9 shown in FIG. 1 ; and,

FIG. 10 is an enlarged detail view of area 10 shown in FIG. 1 .

The drawings show broken lines that illustrate portions of the pet drinking fountain. FIGS. 1, 9 and 10 show broken lines that represent the boundaries and indicators of the enlarged detail views. The broken lines form no part of the claimed design. 

CLAIM The ornamental design for a pet drinking fountain, as shown and described. 